Lamp.



C.- L. BETTS.

LAMP.

APPLICATION FILED JAN. 21, 1910.

1,041,41@ Patented Oct. 15, 1912.

i To all 'whom 'it mag/concern:

securing these lenses tothe body or case of narra/eras? CHARLES'L. BETTS, OFYNYEW YORK, N.. Y., ASSIGNOR T0 R. E. DIETZ i i NEW YORK, N. Y. Y

rarnrvr enrich."

COMPANY, or

LAMP.

incrire. l,

Be it known that l, CHARLES L. Bn'i'rs, -a.

citizen of the United States,"residing at New. York, borough of Brooklyn, inthe countyv of Kings and State of New York, have invented "a new and useful Improvement ,in

`Lamps, of which the ollowingvis a specification.`

rlhis invention relates to that class of lampsin which the case or body is provided .with lenses through which the light' is sides with a white and a green bulls eye lens.

The object of this invention is'to provide simple, convenient and reliable means for the lamp. 1

In the 'accompanying drawings: liigurel` is a side elevation of an electric tail lamp.-

embodying this invention. Fig. 24 is a longitudinal sectional elevation thereof, on an enlarged scale. Fig. 3- is a transverse sectional elevation at right angles'to Fig. 2,'in line 3 3, Fig. 2. Fig. 4 is a horizontal sectional view illustrating the manner of applying the rear lens to thebody lor case of the lamp. Fig. 5 isa similar view showing the rear lens applied to the-body or case. Fig. 6 is a front elevation of the rear lens. Figs. 7 and 8 are fragmentary sectional views illust-rating diiererit positions of the notch vand stop of the rear lens. Fig. 9 is a perspective view of' one of the sidelenses l which may be of any suitable construction' and its attaching rim. .c

Like reference characters .refer to like parts in the several figures.

Arepresents the body or case of the lamp or form and is provided in its rearside with' a circularupright opening 10'forvtl1`e rear lens B, which is usually a ruby semaphore.

lens, and in i-ts sides with circular uprightv openingsll for the side lenses orbulls eyes C and D, one of which `is usually *white and the other green. The case `or bodyl A is shown of approximately globular 'or vspherical form, f;.which form is/w'ell 'adapted for an electriclamp, but may be of any other form and` construction suitable for the kind of Specification of Letters Patent.

Application led January 21, 1910. Serial No. 539,374.

lamps employed, whether an electric or an oil` burning lamp. I

12 represents an electric lamp secured in the lamp case, and 18 a refiector arranged lWithin the case in front of the lamp so as to reflect the light upon the rear lens B.

The rear opening 10 is formed by a short collar 14 which projects rearwardly and is provided on opposite sides with laterally rojecting ,attaching studs 15. rlhe rear lens is mounted in an annular attaching frame 16 which fits around the vcollar 14 and is curved inwardly at itsfree or frontend so as to 'enter the space between the studs and the body or case of the lamp and engage the attaching frame forms a'l circumferential internal cavity` or recess 1n the frame into imposition on the lamp case 'and in. which the' vstuds are concealed. The 'attaching frame ofthe yrear'lens is provided in its This frame is .engagedwith the 4studs by first placing the rear lens and its frame in an oblique position, as represented in Fig. 4, and` engaging the hooked orhollow frame 16 over one' of the studs, then swinging the vframe and lens to the normal position, at

and then iving the frame and lens a partial turn to break the coincidence between the notch and stud,.Fig. 3.

The frame 16` is preferably provided in its cavity with a stop 18 adjacent to the'notch 17 which limits the rotary movement Vot the vlens and vframe on the body.. This stop ar.-

rests the, turning movement in the locking 4direction before the notch can register with the stud toward which it is moving, Fig..7, in which position of' the parts thelnotc'h is farthest from the stud` with which it was engaged in applying the lens to the case.

has reached the position in which it coincides with the stud toward which it has been moving, Fig, 8. The stop, therefore, en- 'abljes the lens to be readily turned into the .ing special attention on'the part of the user. 'Ther-ear lens being detachable from the case, as described, the interior of the case is l v l v studs. This curved or hooked form of. the'y right angles to the airis of the case, with thenotch 17in line with the other stud, Fig."5,\

locked or unlocked position, without requir-v Patcnteel'filct. 15, MM2.

which .Jlhe studs project when the frame is .edge with a notch 17 vlwhich lpermits the frame to Abe passedfover one "of the studs.v8

The stop arrests the movement of the lens f in' the unlocking direction when the notch f ully and' freely accessible for cleaning, re placing, or'manipulating the internal parts of the lamp. The described means for connecting the lens -With the case is extremely rim. The latter bears `against the inner side.

of the case around the opening, Fig. 4', and

is secured to the case by solder or other suitable means.

I vclaim as my invention: 1. The combination with ing' acircular lens opening and provided outside of said opening with attaching projections which project-outwardly therefrom 'i on opposite sides thereof, of a .detachable lens frame having a circumferential internal recess 'adapted to engage over and/inter a lamp case havlock with said projections and provided inl its ed ewwth a notch for engaging it with one o said projections preparator to ro? ltating the frame to the lockedy positlon, sub.-

stantially asset forth.

2. The combination with a lamp case having a circular lens opening and provided outside of said opening with attaching proj ections which project outwardlyv therefrom on opposite sides thereof, of a' detachable lens frame having a circumferential internal i recess adapted to engage overland interlock With said projections and rovided in its edge Withfa notch for engaging it with one of said. projections preparatory to rotating the frame-to the locked position and with a sto f adjacent to sail notch forv limiting the r tary movement of the frame, substantially as set forth. Y

Witness my hand in the presence of twoA subscribing Wltnesses. Y

.HARLES L. BETTs.

Witnesses:

E. D. PRICE, FRED H. 'IWoMBLY. 

